<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>TTS Audio Test</title>
    <style>
        :root {
            --primary: #4a90e2;
            --primary-dark: #357abd;
            --gray-light: #f5f5f5;
            --gray: #666;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background: var(--gray-light);
            color: #333;
        }

        h1 {
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
        }

        .controls {
            display: grid;
            gap: 1rem;
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        textarea {
            width: 100%;
            height: 120px;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
            resize: vertical;
            transition: border-color 0.2s;
        }

        textarea:focus {
            outline: none;
            border-color: var(--primary);
        }

        select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
            background: white;
            cursor: pointer;
        }

        .button-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 0.5rem;
        }

        button {
            padding: 0.8rem;
            border: none;
            border-radius: 4px;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        #speak-button {
            background: var(--primary);
            color: white;
        }

        #speak-button:hover {
            background: var(--primary-dark);
        }

        #pause-button, #resume-button, #stop-button {
            background: white;
            border: 1px solid var(--gray);
            color: var(--gray);
        }

        #pause-button:hover, #resume-button:hover, #stop-button:hover {
            background: var(--gray-light);
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
    </style>
</head>
<body>
    <h1>TTS Audio Stream Demo</h1>
    <div class="controls">
        <textarea id="text-input" placeholder="Enter text to speak..."></textarea>
        <select id="voice-select"></select>
        <div class="button-group">
            <button id="speak-button">Speak</button>
            <button id="pause-button">Pause</button>
            <button id="resume-button">Resume</button>
            <button id="stop-button">Stop</button>
        </div>
    </div>
    <script>
        const textInput = document.getElementById('text-input');
        const voiceSelect = document.getElementById('voice-select');
        const speakButton = document.getElementById('speak-button');
        const pauseButton = document.getElementById('pause-button');
        const resumeButton = document.getElementById('resume-button');
        const stopButton = document.getElementById('stop-button');
        let voices = [];

        function loadVoices() {
            voices = speechSynthesis.getVoices();
            voiceSelect.innerHTML = voices
                .map((voice, index) => `<option value="${index}">${voice.name} (${voice.lang})</option>`)
                .join('');
        }

        speechSynthesis.onvoiceschanged = loadVoices;
        loadVoices();

        function speak(text) {
            const utterance = new SpeechSynthesisUtterance(text);
            const selectedVoice = voices[voiceSelect.value];
            if (selectedVoice) utterance.voice = selectedVoice;
            
            utterance.addEventListener('start', () => {
                speakButton.disabled = true;
                console.log('Speech started');
            });

            utterance.addEventListener('end', () => {
                speakButton.disabled = false;
                console.log('Speech ended');
            });

            speechSynthesis.speak(utterance);
        }

        speakButton.addEventListener('click', () => {
            const text = textInput.value;
            if (text) speak(text);
        });

        pauseButton.addEventListener('click', () => speechSynthesis.pause());
        resumeButton.addEventListener('click', () => speechSynthesis.resume());
        stopButton.addEventListener('click', () => {
            speechSynthesis.cancel();
            speakButton.disabled = false;
        });
    </script>
</body>
</html>